Durability Mouth Guard for Heavy Teeth Grinding


Extreme Strength, Ultimate Protection

Not all teeth grinding habits are the same. Heavy teeth grinding can wreak havoc on your smile and affect so much more than your quality of sleep. We understand the short and long term effects of heavy, chronic teeth grinding and clenching. Teeth wear, cracks, chips and sensitivity don’t just happen overnight but once it begins, costly dental repair is needed. This is why we created a durable mouth guard built to protect your smile.

Protecting Smiles, Wallets Too

Ask any dentist- there is simply nothing better to eat, laugh, talk and chew with than natural teeth. With Sentinel Mouthguards, your teeth are comfortably protected and your tooth structure stays preserved.

Our Durability Mouth Guard for Heavy Teeth Grinding is specifically designed to withstand intense teeth grinding and clenching, offering superior protection for even the most severe cases. Made from a strong, durable material, our mouth guard is engineered to absorb and distribute the force of your teeth grinding and clenching, protecting your teeth and jaw from the damaging effects of this common problem.

Experience the difference in just three simple steps:

Here's how it works 3 easy steps

Our simple and easy-to-use mold kit allows you to create a mold of your teeth from the comfort of your own home. Once we receive your mold, we’ll create a mouthguard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.

Say no to shortened, cracked teeth and hello to a healthy smile.

sentinel mouthguards smile

  • Prevents teeth from grinding and clenching
  • Relieves jaw pain, teeth pain, headaches, tooth sensitivity
  • Protects your teeth from fracture lines, chips, cracks and breakage
  • Prevents teeth shortening (from grinding and clenching)
  • Prevents long term dental issues and future dental repairs
  • Promotes better sleep and better oral health
  • Made in the USA
  • Safest materials. Our mouth guards do not contain BPA, silicone, gluten, latex, MMA, and phthalates.
  • Preserve your dental work with confidence. Our guards protect veneers, crowns, and other restorative dental work.
  • Our products are backed by our love it or your money back guarantee. We’re confident you’ll be completely satisfied with your purchase.

Expert Fit by Professional Lab Technicians

Since 2012, we have helped thousands of people just like you overcome their battle with teeth grinding and clenching. We’ve developed a simple and easy-to-use mold kit that allows you to create a mold of your teeth from the comfort of your own home. Once we receive your mold, we’ll create a mouth guard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.


Product Description

Sentinel Mouthguards Durability Night Guard: Non-Flexible, Long-Lasting, and Safe

Rise and Shine Grinning, Backed by Our Money-Back Promise

The Sentinel Guarantee

Crafting top-notch custom night guards and mouth guards right from St. Petersburg, Florida. We’re all about premium quality, uniquely tailored to you. Our skilled lab experts create each night guard, ensuring they meet our strict benchmarks. Your satisfaction, our priority.

  • 100% unconditional money-back guarantee: We’re confident that you’ll love your new night guard, but if for any reason you’re not completely satisfied, simply return it within 30 days for a full refund.
  • 30-day option to let us get it right: If you don’t love your new night guard within the first 30 days of receiving your guard, we’ll work with you to make it right. Our goal is to ensure that you get the best possible fit and protection for your teeth.
  • 1-year warranty: We also offer a 1-year warranty on all of our night guards, giving you added peace of mind and protection.

Due to the thicker nature of this mouth guard, we require that you take upper and lower teeth impressions for an even bite and to ensure proper occlusion.

why choose sentinel mouthguards graphic compare to dentist made custom night guard

How does it work?

Get ready for a seamless experience. We’ll send an impression kit with all you need for a precise dental mold. Mix, mold, and send it back in the prepaid envelope. Your custom mouth guard is crafted in 3-4 days. It’s hassle-free and ships for free!

What you’ll get:

  • A complete impression kit with instructions and prepaid return mailer
  • (1) Durability Night Guard
  • Breathable retainer case
  • 1 year warranty
  • Fast all inclusive FREE shipping

Avoid expensive dental repairs from teeth grinding and clenching

example of damage from teeth grinding and jaw clenching

Not sure which guard is right for you? Get expert guidance with our 60 second quiz!

find your night guard match now graphic

Our Commitment To You

At Sentinel Mouthguards, we’re committed to your satisfaction. That’s why we provide free night guard adjustments and always work to make sure you’re completely happy with your purchase.

Since 2012, we have helped thousands of people just like you overcome their battle with teeth grinding and clenching. We’ve developed a simple and easy-to-use mold kit that allows you to create a mold of your teeth from the comfort of your own home. Once we receive your mold, we’ll create a mouth guard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.


Additional Information

Weight 3 oz
Guard For

Upper teeth (most preferred), Lower teeth

Product Reviews

  • Adriana Covacevich


    This is a close to dentist quality as your going to get online. I have gone through several companies claiming to make quality products but Sentinel is the only one I’ve found that compares to my dentist made guard that I had for years. I would strongly recommend this product and company.

  • Ryan

    Quality product!

    I was looking for something comparable to what my dentist was trying to sell me but without paying $600. I did my research and settled on Sentinel. What brought me to Sentinel after reviewing other online companies is their transparency in the materials that they use, they’re a US based company and they’ve been making custom mouth guards for many years. I’m glad I trusted them to make my custom night guard. The care and attention to detail is magnificent! The fit is great. Process was easy. I couldn’t be happier. If you’re on the fence, choose Sentinel! You won’t be disappointed!

  • Sondra Cortez

    I value good companies more than ever these days. When you call, someone picks up. Friendly, fast process. The delivery of both items (the impression kit and the custom night guard) were correct and on time. Free shipping too! I’m impressed!

  • Steven Grossman

    I typically never leave reviews but as this product does require some back and forth transactions I do feel compelled to leave some feedback. First, in full admittance, I was nervous about taking my dental impression. The company goes above and beyond to give detailed instructions including written ones as well as two separate videos. You don’t have to utilize all of the instruction (the written ones are probably enough) but if you’re like me and want to make sure you thoroughly understand what you’re doing, the information is there and I did appreciate that.

    I had no problem making my upper dental impression but my lower one didn’t come out well. Luckily, the company included 2 extra putty packs for additional attempts.
    I sent my impressions off and received the custom night guard within a weeks’ time.
    The fit is much better than any other night guard I have ever worn.
    I am over the moon with the comfort and feel of this night guard.

    Overall, this service is wonderful. Email communication was prompt and friendly.
    I would highly recommend Sentinel Mouthguards to anyone considering a custom night guard for teeth grinding.

  • Thomas S.

    I’ve been grinding for several years now. My dentist recommended one and quoted $700. I just couldn’t bring myself to pay that much for a night guard made by my dentist. So, I did research on more affordable/alternative options.So far, my guard is working great and at a fraction of the night guard price. I couldn’t be happier!

  • Jasmine Joy

    This is the best mouth guard for heavy teeth grinders. I have been through many mouth guards from store bought to dentist made and Sentinel Mouthguards makes the best ones. Impression process was easy for me but that may be because I’ve had several taken over the years and knew what to look for.

    They do send an extra putty for a 2nd attempt and they are quick to reply via email if you send a photo to doublecheck the quality of your dental impression. Overall, they’re a great company with an even better product. If you’re on the fence, I highly recommend!

  • Charles

    I just wanted you to know I am so grateful to you guys, thank you so much for redoing my night guard in the thicker material. It absolutely did the trick and I am sleeping without jaw pain. I’m waking up without headaches and I just can’t thank you enough.
    But I wanted to thank you for going the extra mile and fixing that for me, and sending it so promptly. Y’all have a blessed day and drive safely!

  • Ankita James

    Works perfect!!

    I have had night guard from other online companies and the fit was never right. Received my Sentinel guard and have been using it for several nights. I love this one. Best night guard I’ve ever owned! Fit is perfect, quality is high and the process was FAST! A++++

  • Sarah R.

    Love this company!! I have ordered 2 guards from Sentinel plus a teeth whitening kit. Everything I’ve received has fit perfectly, it’s high quality and the service is fast and friendly. Sentinel has my business for years to come. Thank you for doing things right!

  • John Zubritzky

    The absolute best night guard ever! So glad I found this here. My dentist was asking for $600. Fit is true to my mouth and my jaw pain is gone!

Free Shipping

We ship your kit with everything you need from the molding trays and putty to the prepaid return packaging.

30 day guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 30 days for a full refund.

Save 20%

By entering coupon code "big spender", you save 20% on orders over $200.